678973 has 8 divisors (see below), whose sum is σ = 703296. Its totient is φ = 655200.

The previous prime is 678971. The next prime is 678989. The reversal of 678973 is 379876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 678973 - 2¹ = 678971 is a prime.

It is a super-2 number, since 2×678973² = 922008669458, which contains 22 as substring.

It is a Duffinian number.

678973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5118 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (87912).

2⁶⁷⁸⁹⁷³ is an apocalyptic number.

It is an amenable number.

678973 is a deficient number, since it is larger than the sum of its proper divisors (24323).

678973 is a wasteful number, since it uses less digits than its factorization.

678973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its digits is 63504, while the sum is 40.

The square root of 678973 is about 823.9981796096. The cubic root of 678973 is about 87.8923010976.

The spelling of 678973 in words is "six hundred seventy-eight thousand, nine hundred seventy-three".